[INFO] fetching crate mock_derive 0.8.0...
[INFO] testing mock_derive-0.8.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate mock_derive 0.8.0 into /workspace/builds/worker-106/source
[INFO] validating manifest of crates.io crate mock_derive 0.8.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mock_derive 0.8.0
[INFO] finished tweaking crates.io crate mock_derive 0.8.0
[INFO] tweaked toml for crates.io crate mock_derive 0.8.0 written to /workspace/builds/worker-106/source/Cargo.toml
[INFO] crate crates.io crate mock_derive 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2455ed417c622226548267003dea64b5d6ab08aa7cba5cdec57a73c102b0ec7a
[INFO] running `Command { std: "docker" "start" "-a" "2455ed417c622226548267003dea64b5d6ab08aa7cba5cdec57a73c102b0ec7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2455ed417c622226548267003dea64b5d6ab08aa7cba5cdec57a73c102b0ec7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2455ed417c622226548267003dea64b5d6ab08aa7cba5cdec57a73c102b0ec7a", kill_on_drop: false }`
[INFO] [stdout] 2455ed417c622226548267003dea64b5d6ab08aa7cba5cdec57a73c102b0ec7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de449508f2c7a8cb44a0186eb822f5af38c35965b327d64e2eed99b17977184c
[INFO] running `Command { std: "docker" "start" "-a" "de449508f2c7a8cb44a0186eb822f5af38c35965b327d64e2eed99b17977184c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling mock_derive v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.71s
[INFO] running `Command { std: "docker" "inspect" "de449508f2c7a8cb44a0186eb822f5af38c35965b327d64e2eed99b17977184c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de449508f2c7a8cb44a0186eb822f5af38c35965b327d64e2eed99b17977184c", kill_on_drop: false }`
[INFO] [stdout] de449508f2c7a8cb44a0186eb822f5af38c35965b327d64e2eed99b17977184c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c03c2dd46cf62846871fb4b6adf48d34bacb23ac65bc35d466765b4a2aa8a8fb
[INFO] running `Command { std: "docker" "start" "-a" "c03c2dd46cf62846871fb4b6adf48d34bacb23ac65bc35d466765b4a2aa8a8fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling mock_derive v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `generics`
[INFO] [stdout]   --> examples/generics.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / extern crate mock_derive;
[INFO] [stdout] 2  | |
[INFO] [stdout] 3  | | use mock_derive::mock;
[INFO] [stdout] 4  | |
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     }
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `examples/generics.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mock_derive` due to 2 previous errors
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `simple`
[INFO] [stdout]    --> examples/simple.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / extern crate mock_derive;
[INFO] [stdout] 2   | |
[INFO] [stdout] 3   | | use mock_derive::mock;
[INFO] [stdout] 4   | |
[INFO] [stdout] ...   |
[INFO] [stdout] 118 | |     }
[INFO] [stdout] 119 | | }
[INFO] [stdout]     | |_^ consider adding a `main` function to `examples/simple.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `extern_functions`
[INFO] [stdout]   --> examples/extern_functions.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / extern crate mock_derive;
[INFO] [stdout] 2  | |
[INFO] [stdout] 3  | | use mock_derive::mock;
[INFO] [stdout] 4  | |
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |     }
[INFO] [stdout] 44 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `examples/extern_functions.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c03c2dd46cf62846871fb4b6adf48d34bacb23ac65bc35d466765b4a2aa8a8fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c03c2dd46cf62846871fb4b6adf48d34bacb23ac65bc35d466765b4a2aa8a8fb", kill_on_drop: false }`
[INFO] [stdout] c03c2dd46cf62846871fb4b6adf48d34bacb23ac65bc35d466765b4a2aa8a8fb